diff --git a/package.json b/package.json
index 8585590..daebd18 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "babel-plugin-istanbul": "^6.1.1",
     "bpmn-js": "^17.0.0",
     "camunda-bpmn-moddle": "^7.0.1",
-    "chai": "^4.4.1",
+    "chai": "^5.0.0",
     "cross-env": "^7.0.3",
     "eslint": "^8.56.0",
     "eslint-plugin-bpmn-io": "^1.0.0",
@@ -63,7 +63,7 @@
     "mocha-test-container-support": "^0.2.0",
     "npm-run-all2": "^6.0.0",
     "puppeteer": "^22.0.0",
-    "sinon": "^17.0.1",
+    "sinon": "^18.0.0",
     "sinon-chai": "^3.7.0",
     "webpack": "^5.74.0",
     "zeebe-bpmn-moddle": "^1.1.0"